diff --git a/flake.lock b/flake.lock
index 333caa1..5f57664 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1739034224,
-        "narHash": "sha256-Mj/8jDzh1KNmUhWqEeVlW3hO9MZkxqioJGnmR7rivaE=",
+        "lastModified": 1744478979,
+        "narHash": "sha256-dyN+teG9G82G+m+PX/aSAagkC+vUv0SgUw3XkPhQodQ=",
         "owner": "LnL7",
         "repo": "nix-darwin",
-        "rev": "0b6f96a6b9efcfa8d3cc8023008bcbcd1b9bc1a4",
+        "rev": "43975d782b418ebf4969e9ccba82466728c2851b",
         "type": "github"
       },
       "original": {
@@ -23,11 +23,11 @@
     "emacs-config": {
       "flake": false,
       "locked": {
-        "lastModified": 1737496996,
-        "narHash": "sha256-fKIiUGiVrNVQbIf+TH3w/kp801wyRacRtc1lSWtbz9g=",
+        "lastModified": 1740924875,
+        "narHash": "sha256-u0n98s3Lhm7SGY1k65TWQ7a9vWT9nWd2jRXsPquqM0M=",
         "owner": "larstvei",
         "repo": "dot-emacs",
-        "rev": "5a78a0fce4139bfe6bfab54411f3ac9f105af442",
+        "rev": "56f6827eb3077a60c839b3033b4db626341bb58a",
         "type": "github"
       },
       "original": {
@@ -45,11 +45,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1739064992,
-        "narHash": "sha256-N3kUr/yiBelJq+3O2VjnuhONVagnXsZS3WqQkG7StCY=",
+        "lastModified": 1744513704,
+        "narHash": "sha256-LEPQ9AXJYDHWCFmkkhkbkTwNHaeEEm6+6EE89IePLsE=",
         "owner": "larstvei",
         "repo": "emacs-flake",
-        "rev": "17c2621d57bd4e5d24e6836c48533dcdccc941f2",
+        "rev": "3fc9e43ad2bccb8b27c682629162f564c6e4a773",
         "type": "github"
       },
       "original": {
@@ -64,11 +64,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1739063922,
-        "narHash": "sha256-kChq3WS1NDpGnIpuTrcVKggZ0CUJbUlMBRkmJYWMMcw=",
+        "lastModified": 1744512440,
+        "narHash": "sha256-6cItqiP/EDLgQdKXyqAGwsYnNITNH3EBV2PA0nVkVBw=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "ce509b25a8d65cebd8ee5722423151690b4e5e70",
+        "rev": "5494c453843359d4b03ace92e06cbf8143ef62b0",
         "type": "github"
       },
       "original": {
@@ -80,11 +80,11 @@
     "emacs-plus": {
       "flake": false,
       "locked": {
-        "lastModified": 1734881694,
-        "narHash": "sha256-0awwiJjYGvwzqghzjgQiE6rRyv//I68l2ivwdstbBfU=",
+        "lastModified": 1743441558,
+        "narHash": "sha256-Eepinxv05Yl79AoPVJveGDZPKHhlAes7XtUvrssflrU=",
         "owner": "d12frosted",
         "repo": "homebrew-emacs-plus",
-        "rev": "5f1f625f43d498dcb9a931e0f351bfdaeb41cd1b",
+        "rev": "3e95d573d5f13aba7808193b66312b38a7c66851",
         "type": "github"
       },
       "original": {
@@ -118,11 +118,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1739051380,
-        "narHash": "sha256-p1QSLO8DJnANY+ppK7fjD8GqfCrEIDjso1CSRHsXL7Y=",
+        "lastModified": 1744498625,
+        "narHash": "sha256-pL52uCt9CUoTTmysGG91c2FeU7XUvpB7Cep6yon2vDk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "5af1b9a0f193ab6138b89a8e0af8763c21bbf491",
+        "rev": "db56335ca8942d86f2200664acdbd5b9212b26ad",
         "type": "github"
       },
       "original": {
@@ -133,11 +133,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739020877,
-        "narHash": "sha256-mIvECo/NNdJJ/bXjNqIh8yeoSjVLAuDuTUzAo7dzs8Y=",
+        "lastModified": 1744463964,
+        "narHash": "sha256-LWqduOgLHCFxiTNYi3Uj5Lgz0SR+Xhw3kr/3Xd0GPTM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a79cfe0ebd24952b580b1cf08cd906354996d547",
+        "rev": "2631b0b7abcea6e640ce31cd78ea58910d31e650",
         "type": "github"
       },
       "original": {
@@ -149,11 +149,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1738843498,
-        "narHash": "sha256-7x+Q4xgFj9UxZZO9aUDCR8h4vyYut4zPUvfj3i+jBHE=",
+        "lastModified": 1744309437,
+        "narHash": "sha256-QZnNHM823am8apCqKSPdtnzPGTy2ZB4zIXOVoBp5+W0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "f5a32fa27df91dfc4b762671a0e0a859a8a0058f",
+        "rev": "f9ebe33a928b5d529c895202263a5ce46bdf12f7",
         "type": "github"
       },
       "original": {
@@ -165,11 +165,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1739019272,
-        "narHash": "sha256-7Fu7oazPoYCbDzb9k8D/DdbKrC3aU1zlnc39Y8jy/s8=",
+        "lastModified": 1744502386,
+        "narHash": "sha256-QAd1L37eU7ktL2WeLLLTmI6P9moz9+a/ONO8qNBYJgM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "fa35a3c8e17a3de613240fea68f876e5b4896aec",
+        "rev": "f6db44a8daa59c40ae41ba6e5823ec77fe0d2124",
         "type": "github"
       },
       "original": {
@@ -181,17 +181,17 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1737110817,
-        "narHash": "sha256-DSenga8XjPaUV5KUFW/i3rNkN7jm9XmguW+qQ1ZJTR4=",
+        "lastModified": 1744536153,
+        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "041c867bad68dfe34b78b2813028a2e2ea70a23c",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
-        "rev": "041c867bad68dfe34b78b2813028a2e2ea70a23c",
         "type": "github"
       }
     },
diff --git a/flake.nix b/flake.nix
index 6b10349..9307fa2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,7 +3,7 @@
 
   inputs = {
     nixpkgs = {
-      url = "github:NixOS/nixpkgs/041c867bad68dfe34b78b2813028a2e2ea70a23c";
+      url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     };
     darwin = {
       url = "github:LnL7/nix-darwin";
@@ -26,7 +26,7 @@
           ./modules/core.nix
           ./modules/macos.nix
 
-          home-manager.darwinModule
+          home-manager.darwinModules.default
           {
             home-manager = {
               useGlobalPkgs = true;
diff --git a/modules/core.nix b/modules/core.nix
index 6b65f80..6d9441c 100644
--- a/modules/core.nix
+++ b/modules/core.nix
@@ -35,6 +35,4 @@
     pkgs.htop
     pkgs.tree
   ];
-
-  services.nix-daemon.enable = true;
 }
diff --git a/modules/macos.nix b/modules/macos.nix
index 7f24c20..f4b3e07 100644
--- a/modules/macos.nix
+++ b/modules/macos.nix
@@ -74,6 +74,7 @@
       "supercollider"
       "utm"
       "zoom"
+      "zen-browser"
     ];
   };
 }
diff --git a/modules/tools.nix b/modules/tools.nix
index ea52324..0db8d54 100644
--- a/modules/tools.nix
+++ b/modules/tools.nix
@@ -44,4 +44,7 @@ with pkgs;
     zotero
   ];
 
+  learning = [
+    exercism
+  ];
 }